swept away 70 percent of their crops and cost billions of dollars to put the nation back together. Right now there are people trying to prevent hurricanes. At the present it is impossible to prevent them, but with early detection many lives have been saved. Tracking storms at sea and on the Great Lakes is the province of the marine meteorological service. A closely related function is performed by observation centers in the Tropics, which, as part of the hurricane and storm-warning service, issue advice and warnings from June through October, the critical hurricane season. Hurricanes are an enormous danger to all people in all countries. Many will die, buildings will fall, and nation ruined, until we can do something about them. Until we can take cover and run...